Granted Patent
Utility
US 5,140,290 · App. 07/793,299
Device for inductive current limiting of an alternating current employing the superconductivity of a ceramic high-temperature superconductor
Inventor:
Helmut Dersch
Patented Case
View Patent ↗
Granted: Aug 18, 1992
Filed: Nov 14, 1991
Inventor
Helmut Dersch
Assignee (at issue)
Asea Brown Boveri, S.A.
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.